Final answer:
Cole and Toni's increasing commitment and the shift toward formal organization within their social group for girls' literacy represents the sense of collective belonging development in the coalescence stage of a social movement, which is supported by the development of solidarity benefits.
Step-by-step explanation:
Cole and Toni's experiences are indicative of a sense of collective belonging development. As the group moves from informal meetings towards a more organized effort with Toni taking on a leadership role for formal meetings and demonstrations, this reflects the coalescence stage of a social movement as described by sociologists like Blumer and Tilly. During this stage, the movement transitions from a loose gathering into a more structured entity with increased organization and heightened awareness activities.
Solidary benefits are also evident here as Cole and Toni are developing strong ties with other members. This is crucial, particularly in high-risk activism, which relies on such strong-tie connections to maintain engagement and participation in the movement. As Toni and Cole enjoy the sense of belonging and the informal aspects of their grouping, they become more entrenched and willing to lead and formalize their efforts.